Bookmarks are simply lists of entities, e.g., chemicals, mixtures, chemical designs, references, etc. You can use bookmarks for navigating through a document, selecting mixtures for export, selecting chemicals for analysis and many more tasks. Although bookmarks are a simple concept they are a very powerful tool.

The Bookmark Sets Chapter is found in Bookmark Documents. The chapter's Bookmarked Entities Section contains the list of bookmarked entities. For example, a bookmark set might contain the following entries:

Entity Name	Entity Type
3,4-Dichlorobenzotrifluoride	Chemical
1-Butanol + n-Octane	Mixture
AcF: Definition [MKS]	Technique
-C4H2O {2,5}	Group
Actinium	Element
Abara + Jennings + Kay + Teja (1988)	Reference
Tc: Joback Method [MKS]	Technique

Each document can select a bookmark set for navigation. (See Bookmark Select Dialog for details.)

Once a bookmark has been selected, you can use the bookmark navigation commands on the toolbar or within the Bookmarks menu to page through a document.

1	Selects a bookmarks set.
2	Navigates to the first bookmarked entity.
3	Navigates to the previous bookmarked entity.
4	Navigates to the next bookmarked entity.
5	Navigates to the last bookmarked entity.

Thus, using the bookmark set shown at the top of this page, pressing the First Bookmark button will navigate to the 3,4-Dichlorobenzotrifluoride Chemical page. Then pressing the Next Bookmark button will navigate to the 1-Butanol + n-Octane Mixture page. Finally, pressing the Last Bookmark button will navigate to the Tc: Joback Method [MKS] Technique page.

In this example will create a bookmark set containing a list of gases commonly used in semiconductor processing.

1. Creat a copy of an existing Bookmark Document (details here) or use the File Menu's New command to create a new Bookmark Document.
2. Navigate to the Bookmark Sets Chapter and add a new page by pressing the Add toolbar button (the large plus sign). The application will create and insert a new blank page.
3. Click the left mouse button in the Identifier field. The application will activate the Bookmark's Identifier Edit dialog. Enter "Semiconductor Process Gases" as the name for the new bookmark set and press the dialog's Save button.
4. Copy the items from the following table and paste them into the table in the Bookmarked Entities section.
5. Now open the MKS Core Knowledge Base.
6. Select a bookmark set for the open knowledge base by either pressing the button labeled "B" in the toolbar or by selecting the Select Bookmark Set command from the Bookmars menu. The application activates the Select Bookmark dialog.
7. Select the "Semiconductor Process Gases" bookmark set and press the dialog's OK button.
8. Now use the bookmark arrows on the tool bar to navigate through the knowledge based using the selected bookmark set.

For many operations, Cranium and Synapse will need you to specify one or more entities. For example, when exporting property values to a process simulator, you must specify the chemicals to be exported. When evaluating an estimation technique, you can select a set of mixtures to determine the applicability and accuracy of the technique for that particular set. When designing a mixture, you must specify one or more chemicals for each category.

When Cranium or Synapse requests you to enter one or more chemicals, mixtures, references, etc., they will typically enable to use a bookmark set to specify the entries.

Bookmarks can be very useful for specifying a set of entities, e.g., chemicals, techniques, groups, etc. In this example, we use a bookmark set to specify the set of chemicals to export to the ASPEN process simulator. (See documentation on the Aspen Export Dialog for additional details.)

1. Open a Knowledge Base using either Cranium or Synapse.
2. Click on the File menu and select the Export Values command. The application will activate the KB Export Dialog.
3. Select 'ASPEN Input File Format' from the Output File Format list and press the Export button. The Create a ASPEN Property Databank dialog is activated.
4. Press the Browse button to specify the file into which the exported values will be written.
5. Press the dialog's Use Bkmrk (Use Bookmark) button. The application will activate a dialog listing all the open bookmark documents and the bookmark sets in each document. Use the dialog's controls to select the "Semiconductor Process Gases" bookmark set we created above.
6. The export dialog will use the specified bookmark set to select chemicals for export. In this example, the 39 chemicals in the bookmark set were selected.
7. You may now either press the dialog's Export button to generate an ASPEN input file or press the Cancel button to end this example.

Topic	Description
Getting Started using Synapse	provides a quick tour of Synapse's capabilities including examples of chemical product design.
Getting Started using Cranium	provides a quick tour of Cranium's capabilities including a discussion of structure editing.
Estimating Chemical Properties	a short video demonstrating how to estimate the physical properties of chemicals using either Synapse or Cranium.
Estimating Mixture Properties	a short video demonstrating how to estimate the physical properties of mixtures using either Synapse or Cranium.